You don’t need to spend money to have fun. One such example is free games you can play online on many websites. These games range from small game to very large games. It is prefect when you have around 30 minutes to spend on your free time. Many of the most popular apps are inspired by free online games. They are usually made by indie developers. They range from all types of games: action games, puzzle games, strategy games, and many more.
If you look at the google android top game chart or apple top game chart. 80% of these games are inspired by a free online games that can be found online. They just explain the concept and improved the graphics.